JPH019130Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a coil bobbin.

(b) Prior Art Generally, a coil bobbin 1 on which low-voltage coils such as a primary coil and a tertiary coil of a flyback transformer are wound has a cylindrical body 3 on which a coil wire 2 is wound and an end thereof, as shown in FIGS. 1 and 2. It has a plurality of legs 4 extending radially from one end of the cylindrical body 3, and the legs 4
A holding portion 6 for fixing a terminal pin 5 for external connection inserted into a hole in a printed board (not shown) is formed in each of the holding portions 6. Then, the end portion 2a of the coil wire 2 is wound around the terminal pin 5 and soldered.

In this conventional example, each holding part 6 is arranged on the circumference centered on the central axis l of the cylindrical body 3.
In the coil bobbin 1' shown in FIG. The distance from to the holding part 6 varies.

By making the positions of the terminal pins 6 different in this way, it is possible to incorporate a flyback transformer in accordance with the pattern shape of the formation position of the terminal pin insertion hole provided on the printed board of the television set. However, when forming the coil bobbin, The molds used for this were required depending on the type of coil bobbin, which was very uneconomical.

(c) Purpose of the invention The present invention has been devised to eliminate the above-mentioned drawbacks, and it provides versatility so that even one type of coil bobbin can be attached to the printed circuit boards of different models of television sets. The purpose is to reduce the number of molds used to form coil bobbins and reduce costs.

(d) Structure of the invention The coil bobbin of the invention has at least some of the legs extending radially from one end of the cylindrical body around which the coil wire is wound, a terminal pin for fixing an external connection terminal. A plurality of holding parts are provided.

(E) Embodiment FIGS. 5 and 6 show an embodiment of the coil bobbin of the present invention, and the coil bobbin 7 is wound with a coil wire 8 forming a low-voltage coil such as a primary coil or a tertiary coil. There is no difference from the conventional structure in that there is a cylindrical body 9 and a plurality of legs 10 extending radially from one end of the cylindrical body 9, but the central axis of the cylindrical body 9 is located at the end of each leg 10. A cylindrical first holding part 11 having a pin insertion hole 13 is provided on a large circumference centered on the central axis l, and a small circumference centered on the central axis l is provided in the center of each leg part 10. A cylindrical second hole with a pin insertion hole 13 on the top.
A holding portion 12 is provided.

Therefore, there are cases in which the terminal pin 14 for external connection is inserted and fixed into the pin insertion hole 13 of the first holding part 11 and used when the terminal pin 14 for external connection is inserted and fixed in the pin insertion hole 13 of the first holding part 11. The coil bobbin can be used for both fixed and fixed use, giving the coil bobbin versatility.

Figures 7 and 8 show another embodiment of the present invention.
Parts that are the same as those in the figure are indicated with the same figure number.
The pin insertion holes 1 are provided at the ends of the legs 16a to 16j extending radially from one end of the coil bobbin 15.
The first holding parts 17a to 17j having the number 3 are arranged in a rectangular shape, and the leg parts 1 having the holding parts 17a, 17d, 17g, and 17j corresponding to the four parts of this rectangular shape are arranged in a rectangular shape.
6a, 16d, 16g, 16j have a second holding part 18a, which has a pin insertion hole 13 in the center part;
18b, 18c, and 18d are provided.

The second holding parts 18a to 18d and the leg part 1 provided with the second holding parts 18a to 18d
1st located between 6a, 16d, 16g, 16j
Holding parts 17b, 17c, 17e, 17f, 17
h and 17i are arranged so as to be located on the circumference centered on the central axis l.

Therefore, the terminal pin for external connection is held in the first holding part 1.
7a to 17j, a rectangular terminal pin arrangement is possible, and the external connection terminal pins are fixed to the first holding parts 17b, 17c, 17e, 17f, 17h, 1
7i and second holding parts 18a, 18b, 18c, 1
If it is fixed at 8d, a circular terminal pin arrangement can be made.

Incidentally, in each of the above embodiments, a case has been described in which two holding parts are provided on the leg part, but it goes without saying that two or more holding parts may be provided on the leg part.

(f) Effects of the invention According to the invention, terminal arrays of multiple shapes can be made with one coil bobbin, so the number of expensive molds used can be reduced and the coil bobbin can have versatility, which is useful. be.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional coil bobbin, Figure 2 is a diagram showing its bottom structure, Figure 3 is a front view of another conventional coil bobbin, Figure 4 is a diagram showing its bottom structure, and Figure 5 is a diagram showing its bottom structure. The figure is a front view showing one embodiment of the coil bobbin of the present invention, Fig. 6 is a view showing the structure of its bottom, Fig. 7 is a front view showing another embodiment of the present invention, and Fig. 8 is a view of the bottom of the coil bobbin. It is a figure showing a structure. 8... Coil wire, 9... Cylindrical body, 10... Leg, 11... First holding part, 12... Second holding part, 14... Terminal pin for external connection, 15... Tube Shaped bodies, 16a-16j...Legs, 17a-17j...
...first holding section, 18a to 18d...second holding section.

Claims (1)

[Scope of utility model registration request] At least some of the legs extending radially from one end of the cylindrical body around which the coil wire is wound are provided with a plurality of holding parts for fixing external connection terminal pins. Features a coil bobbin.